Pulitzer prize nominated author Anthony Summers has covered the pivotal stories of the past hundred years, and in many cases forced a rethink.

He has reported on the conflict in the Middle East; the Vietnam War; the Kennedy and Martin Luther King assassinations; Watergate; the rise and fall of the American Mafia; the Hiss and Profumo espionage cases.

He has explored the lives and deaths of the powerful and the famous: from Tsar Nicholas II to Marilyn Monroe, Frank Sinatra, J. Edgar Hoover and Richard Nixon.

In 2011, his book The Eleventh Day brought the sharpest focus yet to a full account of 9/11, the events that led up to it, and the troubling questions that remain.and was a Finalist for the 2012 Pulitzer Prize for History.

Co-authored with Robbyn Swan 'Looking for Madeleine' is the first independent, objective account of the case.

The authors have examined the released Portuguese files, conducted in-depth interviews and original research to answer the questions: What can we really know about this most emotive of cases? What can we learn from it?